How can I change the power down time?

If I want to power down the module TX2, I should press the POWER_BUTTON( Carrier Board S4–POWER_BTN) about 7~8 seconds, but our customer think the time is too long, 3~5 seconds is more suitable, so how can I change the time? thanks

Someone else will have to say if this is correct or not (I am uncertain), but I believe that is hard wired into the PMIC and may not have any adjustment.

Please refer to this thread.